Cook the pasta following the manufacturer directions
In a frying pan, add the olive oil when hot sauté the onions, then add anchovies, capers, olives, add the garlic and when fragrant add the tomatoes. Cook for about 10 minutes.
In another frying pan, heat some more olive oil and when hot add and cook the shrimp for a couple minutes on each side or for whatever long you need to cook them all the way through. If you have extra garlic chopped add another teaspoon at the last minute be careful not to burn it! Adjust seasoning with salt & pepper. Sprinkle the chopped parsley.
Add shrimp to sauce.
To serve add a little butter to the pasta and mix it in
